The herpes IgG test is a blood test used to diagnose herpes simplex virus (HSV). This includes HSV-1, the type most commonly linked to cold sores, and HSV-2, the type mainly associated with genital ...

Once a person has a herpes infection, they develop antibodies. Herpes antibody tests can allow doctors to see if an individual has antibodies in their system. Herpes is a viral infection caused by the ...